Aluminum alloys



iii

Patented Mar. 14, 1939 UNITED STATES PATENT OFFICE Vance Aluminum Castings Col-1)., Chicago, 111., a corporation of Illinois No Drawing. Application January .16, 1939,

Serial No. 251,179

2 @laims.

The present invention relates to aluminum alloys.

More particularly the present invention relates to aluminum alloys of the non-tarnishable type.

The present invention is particularly applicable to aluminum alloys suitable for use as cooking utensils, which should not contain materials which might have a deleterious effect on foods cooked therein if absorbed by said foods.

An object of the present invention is to provide a non-tarnishable alloy which may be manufactured at relatively low cost.

A further object is to provide a non-tarnishable alloy which may be manufactured at low cost and which is safe for use in cooking utensils.

Further objects will appear as the description proceeds.

The alloy according to the present invention contains the following materials within the percentages indicated:

A more specific formula within the ranges above indicated is the following:

Per cent Zinc (approximate) 2 Magnesium (approximate) 2%.: Silicon (approximate) V Aluminum Remainder The percentages recited above are by weight.

The term aluminum as used herein is intended to cover commercial aluminum, which, as is well known, frequently contains impurities. In the accompanying claims, wherein the term remainder aluminum appears, it is to be understood that said remainder may include commercial impurities.

The alloy as above described is non-tarnishable, is corrosion resisting, and is safe for cooking foods for human consumption.

What is claimed is:

1. ,An alloy suitable for use in cooking utensils comprising the following materials within the percentages indicated, by weight:

Per cent Zinc 1 to 2 Magnesium 2 to3 Silicon A to /4 Aluminum Remainder 2. An alloy suitable for use in-cooking utensils comprising the following materials approximately according to the percentages indicated, by weight:

Per cent Zinc 2 Magnesium 2% Silicon 3 Aluminum Remainder ERIK G. GRUNDSTROM. 

